Anodic Reactions on Some Materials in LiCl-KCl Melt

摘要

The anodic reactions on some materials in LiCl-KCl eutectic melt have been investigated. Palladium and Mo were dissolved though Mo showed passivation behavior. In the melt including Li_2O, O_2 gas generation occurred at both metal anodes along with their anodic dissolution. At the graphite anode, some anodic reactions besides the Cl_2 gas generation reaction were observed in the melt with Li_2O. The visual observation and the weight change of the anode indicated that the anodic reaction without gas generation and the electrode consumption preceded the CO_2 gas generation. The potential of the CO_2 gas generation reaction on graphite looked more positive than that of the O_2 gas generation on Pd and Mo, which suggested the overpotential of the CO_2 generation reaction on graphite was rather large in the melt.